Pattern making machine



Aug. 6, 1940. H. L. TREBERT PATTERN MAKING MACHINE Filed Oct. 15, 1937 3 Sheets-Sheet 1 mor f 11v VENTOR Y ///vw?r L. E5555? Ar z'm y Filed Out. 15, 1957 3 Sheets-Sheet 2 [N VENTOR BY NR) L. 75555??? RNE Y Aug. 6, 1940. 'H. L. TREBERT PATTERN MAKING MACHINE s Sh eets-Sheet 3 Filed Oct. 15, 1937 FIG 7 FIG 9 INVENTOR l gNRY REBERT & ATTREY Patented Aug. 6, 1940 v UNITED" STATES PATENT OFFICE PATTERN MAKING MACHINE Henry L. Trebert, Canandaigua, N. Y.

Application October 15,

1937. Serial No. 169,325

6 Claims. (01. 142-26) )Another object of this invention is to so construct the machine that it may be used for shaper and router work in making mouldings, wood,

fillets, etc., or for boring, drilling and even grinding operations.

All these and other objects and attendant advantages of this invention will become more readily-apparent from the detailed description thereof which follows, reference being had to the accompanying drawings in which:

Figure l is a top plan view ofthe machine as it appears set up to form a screw or spiral shaped member.

Figure 2 is a detail sectional view of the machine, taken on the line 2a:-2a: of Figure 1.

Figure 3 is a cross section of the work table of the machine taken on the line 3zc-3a: of Figure 4.. i v

Figure 4 is a side elevation of the machine as it appears set up. for channeling core boxes or other channeling work.

Figure 5 is a top plan view of a core box which is channeledby the machine for the formation of a core with a reverse bend.

Figure ii is a top plan view of a core box which is channeled by-the machine for the formation of ant. shaped core. y

Figure 7 is an end elevation of the machine.

Figure 8 is a vertical sectional view of the spindlehead and spindle drive of the machine, the section being taken on the line 83-85: of Figure 7. V

Figure 9 is a perspective View of a straight channeled or fluted member produced by the machine.

Figure 10 is a'verticalsectional view of a modified mounting of the spindle head.

As illustrated in the various f gures, the machine has-a work table I which is mounted to slide on a pair of stationary guide rails 2 and 3.

'Th'ese guide rails are supported at each end and intermediate the ends bysuitable .;legs To guide the work table in a straight line movement on the guide rails and hold it firmly anchored thereon, the table carries on the under side the cross members 5 which extend between the guide rails as illustrated in Figure 3 and have the flanges 6, 6 supported thereon to overhang a portion of the under side of the guide rails at'the inner edges thereof. In this, way the work table is mounted for movement back and forth on the guide rails. .In the form shown in the drawings,

the table is made of wood with a metal flange l extending along each side thereof and in the table are provided suitable screw sockets 8, 8 by means of which the work itself or an auxiliary table top for anchoring special work may be secured thereto.

The work table is operated by means of the feed screw 9 which is journaled and held against endwise movement in a bearing Hl carried by the work table on the under side and at the right hand end thereof preferably as part of one of the cross members 5. The'feed screw passes thru the threaded sleeve H which is supported on or forms part of the stationary upright E2. The

legs 4, t and the upright 12 are provided ona A head stock [5 is mounted on top of the work table at the right hand end thereof and a tail stock I6 is adapted to be mounted on top of the work table either in line or outof line with the head stock at the opposite or left hand end thereof. In the head stock ismounted to rotate a spindle which carries the live center l l at one end and the gear it for the rotation of the spindle at the other end. The gearla is rotated by means of the hand wheel [4 thru a trainof gearing includingzthe gears I9, 20, and 2!, of which gears i9 and 20 are mounted on an adjustable bracket -22 to permit the changing of the gear l8 and provide the desired gear ratio which will give the live center a predetermined rotation relative to the straight line movement of the work table by the feed screw 9.

The tail stock l6 carries the spindle 23 which is adapted to moveendwise therein on the rotation of the hand wheel 24. The dead center 24A mounted in the free end of the spindle 23 cooperates with the live center I! to rotatably support the work to be operated upon between them. In mounting the work in place between the centers the dead center is moved against the work piece in order to force the latter against the live center to have the teeth provided on the live center engage into the work and thus effect a driving connection with the live center for its rotation by the hand wheel I4.

The tool, which operates upon the work mounted on the work table, is carried by the spindle 25 which, with its driving mechanism, is mounted so as to be adjustable vertically and horizontally as well as angularly in both a vertical and horizontal plane. For this purpose the spindle and its driving mechanism is supported between a pair of parallel uprights 26 and 2'! to allow the work table to move back and forth between them. These uprights are mounted in suitable supporting sockets 28 provided on the .base plate or bed'lS substantially in the middle between the outer legs 4, 4 of the machine.

Mounted to slide on each of the uprights 26 and 21. is a supporting sleeve 29, each of which is provided with a pivot lug 30 to have a clamping and supporting plate 3| rotatably supported thereon. A clamping screw 32 passes thru the clamping plate and is threaded into the pivot lug to clamp or release the clamping plate for any angular adjustment thereof. Supported between the clamping plates 3! is a bridge 33 on which the cutter spindle and its driving mechanism are adjustably supported. This support comprises a sliding head 34 which embraces the top, bottom and one side of the bridge and is held in place thereon by means of the cover plate 35 which is fastened to the outside thereof as illustrated in Figure 8. To facilitate the movement of the sliding head on the bridge 33, a rack 36 extends the length of the bridge on each side thereof to have the elongated pinion 31, mounted in the cover plate 35, mesh therewith. A suitable handle 38 on top of the pinion provides means for the rotation thereof and the movement of the head on the bridge. A rack 35 is provided on each side of the bridge in order that the pinion may mesh with one or the other depending on whether the head is mounted to one side or the other of the bridge.

The head 34 carries the vertical supporting sleeve 39 and in this sleeve is rotatably mounted the hollow supporting stem 40. The latter is threaded at the top and has a collar 4| screwed thereon to hold the stem suspended in the sleeve. A set screw 42 threaded into the front of the sleeve and'engaging the hollow stem adjustably holds the stemagainst rotation in the sleeve.

At the bottom of the hollow stem is provided the horizontal spindle bearing 43 in which the cutter spindle 25 is journaled. The rear end of this spindle, which carries the pulley 44, is supported in the spindle bearing by an antifriction bearing 45. The forward end of the spindle is provided with a collar 46 and suitable packing surrounds the spindle behind this "collar to keep the lubricating oil which lubricates the spindle in its bearing from leaking past the collar. The collar, in combination with the antifriction hearing, also serves to hold the spindle against endwise movement in the spindle bearing 43. The driving pulley 44 is keyed to the rear end of the spindle 25 and is rotated by a belt 48 from the pulley 49 which is driven by the motor 53 mounted on the platform 5I'on top of the hollow stem 52. The latter is telescopingly mounted in the hollow stem 40 and is held adjustably fixed thereon by the set screw 53 which is threaded thru the collar 4| and projects thru an elongated hole in the hollow stem 40 against the hollow stem 52.

The hollow stem 52, in combination with the hollow stem 40, serves as a reservoir for lubricating oil from which the spindle 25 is constantly lubricated. To fill this reservoir a hole 54 is provided in the wall near the top thereof and to lubricate the spindle bearing from the reservoir a hole 55 is provided in the bottom of the hollow stem 40. In this way the spindle receives a constant supply of lubricating oil from the oil reservoir.

For the vertical adjustment of the combined cutter spindle and its motor drive, a feed screw 56 is journaled adjacent the top and bottom of the upright 21 and parallel thereto. This feed screw passes thru the threaded lug 57 which projects from the sleeve 29 so that on the rotation of this feed screw by means of the handle wheel 58 the complete tool carrier and motor drive assembly carried by the bridge 33 between the supporting sleeves may be conveniently raised and lowered on the uprights 26 and 21 and vertically adjusted with relation to the work table and the work supported thereon;

The cutter head driven by the spindle 25 comprises a pair of collars 59, 59, the opposing faces of which are provided with a pair of grooves 60 to receive the cutter blades 6| and 62 and have them clamped in place between the collars by means of the clamping nuts 60A and held to uniformly project from the periphery in opposite directions. The cutting edges of the cutter blades may be semi-circular as shown in the drawings or have any other outline depending on the cutting operation that is to be performed by them.

For the forming of a screw or spiral such as is illustrated in Figure 1 of the drawings, the cylindrical member 63, from which the screw is to be out, is placed between the head and tail stock and the dead center of the tail stock centered and adjusted thereagainst to force this member against the live center to have it concentrically supported by and between the centers of the head and tail stock with the live center engaging the .work so that it will be rotated thereby. For the desired pitch of the screw to be cut, the proper gear train is interposed between the feed screw 9 and the head stock spindle so that on the rotation of the feed screw 9 by the hand wheel I4 for the endwise movement of the work table the cylindrical member, carried by the work table between the head and tail stock, is simultaneously rotated at a given speed to cause the cutter to out a continuous groove having the predetermined pitch into the cylindrical member.

After the work is mounted and the gearing set for its proper rotative and endwise movement, the cutter proper and its driving mechanism. is positioned to produce the most efficient cutting operation in the forming of the screw or spiral. This is done by raising or lowering the bridge 33 which carries the cutter and its driving mechanism by means of the hand wheel 58 which rotates the feed screw so as to locate the cutter at the proper elevation with relation to the work, then moving the cutter to one side of the work by rotating the handle 38 so as to slide the cutter'assembly and its driving mechanism on the bridge to its proper location to one side of the work and finally by turning the cutter assembly and its driving mechanism in the supporting horizontal plane and have the cutter engage thewith its driving mechanism is then moved on the bridge to feed the cutter against the work while it is being rotated and moved endwise in order to cut a spiral groove into the work. Of course several operations of the cutter are necessary to form the complete thread or spiral and for each cut the cutter may be adjusted by means of the adjustments provided therefor in order to give the thread or spiral the proper shape, width and depth. In this way a screw or spiral is accurately and uniformly formed thruout its length which prior to this was not possible because all such wood screws heretofore had to be cut by means of hand tools.

For ordinary grooving operations the work piece is suitably anchored onto the work table and the cutter spindle mounted parallel to the movement of the work table so that the cutter in its rotation may cut a channel of the desired depth into the work piece during its straight line movement past the cutter. This will produce work such as is shown in Figure 9.

Curved grooving, such as is shown in Figures and 6, is readily accomplished by adjusting the cutter in a vertical plane into the angular position illustrated in Figure l. The work piece is then pivotally mounted on the work table by 'means of a suitable pivot screw at the center of the radius of the groove to be out, as for example at A in Figure 5 and at B in Figure 6. With the cutter operating, the work piece is rotated on the work table in a horizontal plane to have the cutter cut a groove in a circular path and connect the straight sections of the grooves in such work pieces as are illustrated in Figures 5 and 6 or form a completely circular groove if desired. By adjusting the cutter spindle in a horizontal plane so that the axis of the'cutter is not parallel to the movement of the work table, any desired half eliptical groove may be cut with the machine.

By means of the modified mounting illustrated in section in Figure 10, the spindle head is rotatably adjustable in front of the bridge 33. ,To make this possible the bridge is provided with the pivot stud 65 and in this stud is formed anannular groove 66 having a tapered wall 61. A socket '58 provided at the rear of the supporting sleeve 39 engages the stud B5 to have the sleeve rotate thereon. The socket is provided with one or more clamping members 69 having inclined edges Hl which, when forced against the inclined wall of the annular groove by suitable set screws H, cause them to hold the supporting sleeve in any desired angular position on the bridge. This adjustment makes the use of my machine more universally adaptable for all kinds of wood work.

I claim:

1. A tool support comprising an upright, a bridge pivotally supported on said upright for axial adjustment at right angles thereto, a head adjustably mounted to slide back and forth on said bridge, a post pivotally mounted in said head for axial adjustment therein transversely to said bridge on one side thereof, a cutter spindle journaled on said post transversely thereto and adjustable therewith, motor means supported by said post vertically spaced from said spindle and adjustable with said post, and driving means connecting said motor means with said spindle.

2. A tool support as set forth in claim 1 in which said post is also angularly adjustable on said head.

3. A tool support comprising an upright, a sleeve adjustably mounted to slide up and down on said upright, a bridge pivotally supported by said sleeve for axial adjustment at right angles to said upright, a head adjustably mounted to slide back and forth on said bridge,'a post revolvably mounted in said head for axial adjustment therein transversely to said bridge to one side thereof, a cutter spindle journaled at the bottom of said post transversely thereto and adjustable therewith for angular adjustment below said bridge, motor means supported at the top of said post and adjustable therewith for angular adjustment with said spindle above said bridge, and driving means connecting said motor means with said spindle.

A. A tool support comprising an upright, an

elongated bridge pivotally supported on said upright for axial adjustment thereof at right angles to said upright, a head adjustably mounted to slide back and forth on said bridge, a support pivotally mounted on said head for angular adjustment on said head in a plane parallel to the axis of rotation of said bridge, a spindle bearing at the bottom of said support and extending transversely thereto, a spindle mounted to rotate in said bearing, motor means for said spindle at the top of said support and adjustable therewith, and driving means connecting said motor means with said spindle.

5. A tool supportas set forth in claim 4 in which said spindle extends to one side of said head below said bridge and said motor means extend to the same side of said head above said bridge for the driving connection between said motor means and said spindle on said side of the bridge, and a cutter on said spindle on the opposite side of the bridge.

6. A tool support comprising a pair of uprights, an elongated bridge pivotallysupported at each end on said uprights for angular adjustment thereof on an axis extending between said uprights, a head adjustably mounted to slide back and forth on said bridge, a support pivotally mounted on said head for angular adjustment on said head in a plane parallel to the axis of rotation of said bridge, a spindle bearing at the bottom. of said support and extending transversely thereto, a spindle mounted to rotate in said spindle bearing, motor means for said spindle at the top of said support and adjustable therewith, and driving means connecting said motor means with said spindle. 

